﻿using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Net;
using System.IO;
using System.Text;

using System.Collections.Generic;
/// <summary>
/// FtpUpDown 的摘要说明

/// </summary>
public class FtpUpDown
{
        string ftpServerIP;

        string ftpUserID;

        string ftpPassword;

        FtpWebRequest reqFTP;

        private void Connect(String path)//连接ftp
        {
            // 根据uri创建FtpWebRequest对象
            reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(path));
            // 指定数据传输类型
            reqFTP.UseBinary = true;
            // ftp用户名和密码
            reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
        }
        public FtpUpDown(string ftpServerIP, string ftpUserID, string ftpPassword)
        {
            this.ftpServerIP = ftpServerIP;
            this.ftpUserID = ftpUserID;
            this.ftpPassword = ftpPassword;
        }

        #region 从ftp服务器上获得文件列表
        private List<string> GetFileList(string path, string WRMethods, out bool result)//上面的代码示例了如何从ftp服务器上获得文件列表
        {
            List<string> downloadFiles = new List<string>();
            try
            {
                Connect(path);
                reqFTP.Method = WRMethods;
                WebResponse response = reqFTP.GetResponse();
                StreamReader reader = new StreamReader(response.GetResponseStream(), System.Text.Encoding.Default);//中文文件名


                string line = reader.ReadLine();
                while (line != null)
                {
                    downloadFiles.Add(line);
                    line = reader.ReadLine();
                }
                reader.Close();
                response.Close();
                result = true;
                return downloadFiles;
            }
            catch (Exception ex)
            {
                //System.Windows.Forms.MessageBox.Show(ex.Message);
                result = false;
                downloadFiles = null;
                return downloadFiles;
            }
        }
        public List<string> GetFileList(string path, out bool result)//上面的代码示例了如何从ftp服务器上获得文件列表
        {
            return GetFileList("ftp://" + ftpServerIP + "/" + path, WebRequestMethods.Ftp.ListDirectory, out result);
        }
        public List<string> GetFileList(out bool result)//上面的代码示例了如何从ftp服务器上获得文件列表
        {
            return GetFileList("ftp://" + ftpServerIP + "/", WebRequestMethods.Ftp.ListDirectory, out result);
        }
        #endregion

        #region 目录是否存在
        public bool IsExistsDirectory(string path, string dirName,out bool result)
        {
            List<string> tmp = new List<string>();
            tmp = GetFileList(path, out result);
            return tmp.Contains(dirName);
        }
        #endregion

        #region 上传
        public bool Upload(string path, string filename, string newname) //上面的代码实现了从ftp服务器上载文件的功能
        {
            FileInfo fileInf = new FileInfo(filename);
            string uri = "ftp://" + ftpServerIP + "/" + path + newname;
            Connect(uri);//连接          
            // 默认为true，连接不会被关闭
            // 在一个命令之后被执行
            reqFTP.KeepAlive = false;
            reqFTP.RenameTo = newname;
            // 指定执行什么命令


            reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
            // 上传文件时通知服务器文件的大小
            reqFTP.ContentLength = fileInf.Length;
            // 缓冲大小设置为kb 
            int buffLength = 2048;
            byte[] buff = new byte[buffLength];
            int contentLen;
            // 打开一个文件流(System.IO.FileStream) 去读上传的文件


            FileStream fs = fileInf.OpenRead();
            try
            {
                // 把上传的文件写入流


                Stream strm = reqFTP.GetRequestStream();
                // 每次读文件流的kb 
                contentLen = fs.Read(buff, 0, buffLength);
                // 流内容没有结束


                while (contentLen != 0)
                {
                    // 把内容从file stream 写入upload stream 
                    strm.Write(buff, 0, contentLen);
                    contentLen = fs.Read(buff, 0, buffLength);
                }
                // 关闭两个流


                strm.Close();
                fs.Close();
                return true;
            }
            catch (Exception ex)
            {
                //MessageBox.Show(ex.Message, "Upload Error");
                return false;
            }
        }
        #endregion

        //#region 下载
        //public bool Download(string filePath, string fileName, out string errorinfo)////上面的代码实现了从ftp服务器下载文件的功能
        //{
        //    try
        //    {
        //        String onlyFileName = Path.GetFileName(fileName);

        //        string newFileName = filePath + "\\" + onlyFileName;

        //        if (File.Exists(newFileName))
        //        {

        //            errorinfo = string.Format("本地文件{0}已存在,无法下载", newFileName);

        //            return false;



        //        }

        //        string url = "ftp://" + ftpServerIP + "/" + fileName;

        //        Connect(url);//连接  



        //        reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);



        //        FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();



        //        Stream ftpStream = response.GetResponseStream();



        //        long cl = response.ContentLength;



        //        int bufferSize = 2048;



        //        int readCount;



        //        byte[] buffer = new byte[bufferSize];



        //        readCount = ftpStream.Read(buffer, 0, bufferSize);

        //        FileStream outputStream = new FileStream(newFileName, FileMode.Create);



        //        while (readCount > 0)
        //        {

        //            outputStream.Write(buffer, 0, readCount);



        //            readCount = ftpStream.Read(buffer, 0, bufferSize);

        //        }



        //        ftpStream.Close();



        //        outputStream.Close();



        //        response.Close();

        //        errorinfo = "";

        //        return true;

        //    }

        //    catch (Exception ex)
        //    {

        //        errorinfo = string.Format("因{0},无法下载", ex.Message);

        //        return false;

        //    }

        //}
        //#endregion

        //#region 删除文件

        //public void DeleteFileName(string fileName)
        //{

        //    try
        //    {

        //        FileInfo fileInf = new FileInfo(fileName);

        //        string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;



        //        Connect(uri);//连接          



        //        // 默认为true，连接不会被关闭

        //        // 在一个命令之后被执行

        //        reqFTP.KeepAlive = false;



        //        // 指定执行什么命令



        //        reqFTP.Method = WebRequestMethods.Ftp.DeleteFile;





        //        FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();



        //        response.Close();

        //    }

        //    catch (Exception ex)
        //    {

        //        MessageBox.Show(ex.Message, "删除错误");

        //    }

        //}
        //#endregion

    #region 创建目录

    public bool MakeDir(string path, string dirName)
    {
        try
        {
            string uri = "ftp://" + ftpServerIP + "/" + path + dirName;

            Connect(uri);//连接       
            string a = WebRequestMethods.Ftp.ListDirectoryDetails.Length.ToString();

            reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;

            FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();

            response.Close();
            return false;
        }

        catch (Exception ex)
        {
            return false;
            //MessageBox.Show(ex.Message);
        }

    }
    #endregion

        //#region 删除目录

        //public void delDir(string dirName)
        //{



        //    try
        //    {



        //        string uri = "ftp://" + ftpServerIP + "/" + dirName;

        //        Connect(uri);//连接       

        //        reqFTP.Method = WebRequestMethods.Ftp.RemoveDirectory;

        //        FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();

        //        response.Close();

        //    }

        //    catch (Exception ex)
        //    {

        //        MessageBox.Show(ex.Message);

        //    }

        //}
        //#endregion

        //#region 获得文件大小

        //public long GetFileSize(string filename)
        //{



        //    long fileSize = 0;

        //    try
        //    {

        //        FileInfo fileInf = new FileInfo(filename);

        //        string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;

        //        Connect(uri);//连接       

        //        reqFTP.Method = WebRequestMethods.Ftp.GetFileSize;

        //        FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();

        //        fileSize = response.ContentLength;

        //        response.Close();

        //    }

        //    catch (Exception ex)
        //    {

        //        MessageBox.Show(ex.Message);

        //    }

        //    return fileSize;

        //}
        //#endregion

        //#region 文件改名

        //public void Rename(string currentFilename, string newFilename)
        //{



        //    try
        //    {

        //        FileInfo fileInf = new FileInfo(currentFilename);

        //        string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;

        //        Connect(uri);//连接

        //        reqFTP.Method = WebRequestMethods.Ftp.Rename;

        //        reqFTP.RenameTo = newFilename;



        //        FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();

        //        //Stream ftpStream = response.GetResponseStream();

        //        //ftpStream.Close();

        //        response.Close();

        //    }

        //    catch (Exception ex)
        //    {

        //        MessageBox.Show(ex.Message);

        //    }

        //}
        //#endregion

        //#region 获得文件明晰

        //public List<string> GetFilesDetailList(out bool result)
        //{

        //    return GetFileList("ftp://" + ftpServerIP + "/", WebRequestMethods.Ftp.ListDirectoryDetails, out result);

        //}
        //#endregion

        //#region 获得文件明晰

        //public List<string> GetFilesDetailList(string path, out bool result)
        //{

        //    return GetFileList("ftp://" + ftpServerIP + "/" + path, WebRequestMethods.Ftp.ListDirectoryDetails, out result);

        //}
        //#endregion
}
